Sony STR-DH770 Operating Instructions - Page 10

Indicators on the display panel The indicator lights up to indicate the current status.  USB USB device is detected.  Input indicator Indicates the current input. ARC TV input is selected and Audio Return Channel (ARC) signals are detected. OPT Digital signals are input through the OPTICAL jack (page 22, 24). COAX Digital signals are input through the COAXIAL jack (page 26). HDMI Digital signals are input through the selected HDMI jack (page 22, 23, 25).  MEM Memory function such as Preset Memory, etc. is activated.  D.R.C. Dynamic range compression is activated.  Dolby Digital Surround indicator* The receiver is decoding the corresponding Dolby Digital format signals. TrueHD Dolby TrueHD  Dolby Pro Logic indicator The receiver is processing Dolby Pro Logic format signals. This matrix surround decoding technology can enhance input signals. Note The indicator may not light up depending on the speaker pattern setting.  EQ Equalizer is activated.  DTS(-HD) indicator* The receiver is decoding the corresponding DTS format signals. DTS-HD DTS-HD  ST The receiver tunes to a stereo broadcast. 10GB  D.C.A.C. The measurement results of the Auto Calibration function are applied.  SLEEP Sleep timer is activated.  BT Lights up when a BLUETOOTH device is connected. Flashes while pairing and connecting.  Speaker system indicator (page 29) * When playing a Dolby Digital or DTS format disc, make sure that you have completed the digital connections and "INPUT MODE" is not set to "ANALOG".